PURPOSE : Mechanical input/feed back servo actuator is introduced in this control. Limited ability to compensate for changing aerodynamic conditionsĩ FCS:POWERED FLYING CONTROLS Fully powered flight controls They require redundant backup to deal with failures, which again increases weight. Heavy and require careful routing of flight control cables through the aircraft using pulleys, cranks, tension cables and hydraulic pipes. Power Assisted Pilot will move the control column forward to initiate a climb down tendency, the control lever pivots about point ‘X’, and commences moving the elevator DOWN and at the same time, the control valve pistons in the servo valve of PFCU are displaced This allows hydraulic fluid under pressure to flow to the right-hand side of the actuating jack piston, the piston rod which is secured to the aircraft’s will be stationary and the reaction of the pressure exerted on the piston causes the whole servo-unit, and control lever, to move to the right.Ĩ Disadvantages of Mechanical and Hydro-Mechanical Systems
The piston rod which is secured to the aircraft’s will be stationary and the reaction of the pressure exerted on the piston causes the whole servo-unit, and control lever, to move to the left. Power Assisted When the pilot moves the control column backward to initiate a climb, the control lever pivots about point ‘X’, and commences moving the elevator UP and at the same time, the control valve pistons in the servo valve of PFCU are displaced and this allows hydraulic fluid under pressure to flow to the left-hand side of the actuating jack piston.
#First hydraulic flight control system manual#
To move the control surface by hydraulic power in response to the manual operation of the control column or rudder pedals. The hydraulic system has demonstrated to be a more suitable solution for actuation in terms of reliability, safety, weight per unit power and flexibility, with respect to the electrical systemĢ main types: Power assisted Power operated PURPOSE: In to transonic and near supersonic regime bought deficiencies in mechanical flying control systems also the physical power was inadequate for the task. When the pilot’s action is not directly sufficient for the control, the main option is a powered system that assists the pilot. The Complexity and Weight of the system (Mechanical) increased with Size and Performance of the aircraft. Presentation on theme: "Need for Powered Control System"- Presentation transcript:
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